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Note: This addon document is for an older version of GRASS GIS that will be discontinued soon. You should upgrade your GRASS GIS installation, and read the current addon manual page.

NAME

i.evapo.zk - Computes global evapotranspiration calculation after Zhang, Kimball, Nemani and Running formulation, 2010.

KEYWORDS

imagery, evapotranspiration

SYNOPSIS

i.evapo.zk
i.evapo.zk --help
i.evapo.zk biome_type=name ndvi=name airtemperature=name specifichumidity=name atmosphericpressure=name netradiation=name soilheatflux=name elevation=name output=name [--overwrite] [--help] [--verbose] [--quiet] [--ui]

Flags:

--overwrite
Allow output files to overwrite existing files
--help
Print usage summary
--verbose
Verbose module output
--quiet
Quiet module output
--ui
Force launching GUI dialog

Parameters:

biome_type=name [required]
Name of input IGBP biome type raster map [-]
ndvi=name [required]
Name of input Normalized Difference Vegetation Index raster map [-]
airtemperature=name [required]
Name of input air temperature raster map [C]
specifichumidity=name [required]
Name of input specific humidity raster map [-]
atmosphericpressure=name [required]
Name of input atmospheric pressure raster map [Pa]
netradiation=name [required]
Name of input net radiation raster map [MJ/m2/d]
soilheatflux=name [required]
Name of input soil heat flux raster map [MJ/m2/d]
elevation=name [required]
Name of input elevation raster map [m]
output=name [required]
Name of output evapotranspiration raster map [mm/d]

Table of contents

DESCRIPTION

i.evapo.zk Calculates the global diurnal evapotranspiration after Zhang, Kimball, Nemani and Running (2010).

NOTES

Main function ETa (biome_type, ndvi, tday, sh, patm, Rn, G) IGBP Biome types with ID used in this model IGBP Classification * Not used in this model IGBP Biome types and configuration of internal parameters of the model * For WSV when NDVI superior to 0.64"

TODO

SEE ALSO

i.evapo.pm
i.evapo.mh
i.evapo.senay
i.eb.netrad
i.eb.soilheatflux

REFERENCES

Zhang, K., Kimball, J.S., Nemani, R.R., Running, S.W. (2010). A continuous satellite-derived global record of land surface evapotranspiration from 1983 to 2006. WRR 46, W09522

Chemin, Y., 2012. A Distributed Benchmarking Framework for Actual ET Models, in: Irmak, A. (Ed.), Evapotranspiration - Remote Sensing and Modeling. InTech. (PDF)

AUTHOR

Yann Chemin, GRASS Development team, 2011

SOURCE CODE

Available at: i.evapo.zk source code (history)

Latest change: Mon Jun 28 07:54:09 2021 in commit: 1cfc0af029a35a5d6c7dae5ca7204d0eb85dbc55


Note: This addon document is for an older version of GRASS GIS that will be discontinued soon. You should upgrade your GRASS GIS installation, and read the current addon manual page.

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